Journal
JOURNAL OF SURFACE INVESTIGATION
Volume 8, Issue 1, Pages 45-49Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1027451013060098
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It is established that the addition of hydrogen to methane in the reaction mixture upon the fabrication of diamond-like carbon films via the plasma-enhanced chemical vapor deposition method decreases residual stresses in the obtained films and significantly reduces their growth rate. The films were investigated via atomic force microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Irradiation of the prepared films with P+ and PF4+ ions results in strong sample swelling with increasing dose, as well as in a decrease in the compressive stress up to transition to tensile one reaching saturation. Moreover, the fraction of sp(3) bonds increases with increasing ion dose while the fraction of sp(2) bonds decreases symmetrically with the processes proceeding faster upon irradiation with molecular ions. Qualitative mechanisms explaining the experimental results are proposed.
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